QSC AD-S28Tw AcousticDesign Surface Mount Subwoofer

QSC AD-S28Tw AcousticDesign Surface Mount Subwoofer

QSC AD-S28Tw AcousticDesign Surface Mount Subwoofer

B&H # QSADS28TWBK MFR # AD-S28TW-BK
QSC AD-S28Tw AcousticDesign Surface Mount Subwoofer

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Important Notice: This item is non-cancelable and non-returnable
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Expected availability: 7-14 business days 
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Product Highlights

  • Dual 8" Polypropylene Woofers
  • Large Bass Port
  • Defeatable Low-Pass filter
  • 70/100V Transformer with 8 Ohm Bypass
  • Mounting Hardware Included
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  • 1Description

The AD-S28Tw, part of the AcousticDesign series from QSC, is a professional-quality surface mount subwoofer designed to provide low frequency enhancement to ceiling or surface mount AD-series speakers. The subwoofer has a marine-grade plywood cabinet that houses a pair of 8" polypropylene woofers. The cabinet has a dual chamber ported bandpass design with a large port to extend low frequency response.

The subwoofer has a defeatable passive 120Hz low-pass filter with impedance compensation and a 70/100V multi-tap transformer that can also be bypassed for use with 8 ohm speaker systems, making it extremely versatile. The subwoofer can be mounted in a number of ways; freestanding with the included rubber feet, or suspended via forged-shoulder eyebolts or the included steel yoke.

Ideal companion for AD-series speakers
Marine-grade plywood cabinet provides exception resistance to humidity. It also features a zinc-plated steel grille, molded ABS endcaps, and a rotatable logo
Pair of 8" polypropylene woofers provide clear, strong bass and are protected for humid environments
Dual chamber bandpass design features one sealed chamber and one ported chamber to provide efficient, tight bass with excellent low frequency extension
Defeatable passive 120Hz low-pass filter with impedance compensation
High power handling capability of 250W continuous/700W peak
The 70/100V multi-tap transformer has an 8 ohm bypass mode and standard screw terminal connectors, allowing you to connect the subwoofer to virtually any professional sound system
Rubber feet, forged-shoulder eyebolts, and a steel yoke give you a variety of mounting options
UPC: 684284053992
In the Box
QSC AD-S28Tw AcousticDesign Surface Mount Subwoofer
  • Steel Yoke Mount
  • Suspension Hardware Kit
  • Grille Backing Cloth
  • 3-Year Limited Warranty
  • Table of Contents
    • 1Description
    Type Surface Mount Bandpass Subwoofer, Ported
    Driver 2 x 8" (200mm) Weather-Resistant Polypropylene Cone Woofers with Rubber Surrounds
    Frequency Response 42-165Hz (-6dB)
    36-205Hz (-10dB)
    Filter 120Hz Low-Pass, Passive, Bypassable
    Maximum Sound Pressure Level (SPL) 124dB/118dB (Peak/Continuous, 2pi Half Space)
    118dB/112dB (Peak/Continuous, 4pi Full Space)
    Impedance 8 Ohms
    Power Rating 250W RMS (Continuous)
    500W RMS (Max Recommended Amp Power)
    Sensitivity 94dB, 2.83V, 1 m, Half Space (2pi)
    Transformer Custom Low-Distortion Laminated Core, Wide Bandwidth Design
    70V Taps: 200, 100, 50, and 25W
    100V Taps: 200, 100, 15W
    Switch-Selectable 8 Ohm Bypass Mode
    Connectors 4-Position Screw Terminal Barrier Strip (2 In, 2 Out)
    Construction Marine-Grade Plywood with ABS Endcaps and Steel Grille, Textured Black Paint Finish
    Environmental Exceeds Mil Spec 810 for Humidity, Salt Spray and Dust
    IEC 60529 IP-X4 Splash Rating
    Mounting Black Powder-Coated Steel Yoke with Attachment Hardware
    Black Zinc-Coated Forged Shoulder Steel M6 Eyebolts
    Black Powder-Coated Steel Shear Plates with Attachment Hardware
    Black Rubber Feet with Integral Threaded Bolt
    Dimensions (HxWxD) Not Specified by Manufacturer
    Weight 43 lbs (19.5kg) / 55 lbs (25kg)
    Packaging Info
    Package Weight 53.0 lb
    Box Dimensions (LxWxH) 29.0 x 20.0 x 14.75"

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